Event: Division 2

Opponent Rating Result
Richard Maclannan 1811 0 - 1
Edward Small 1850 ½ - ½
Christian Natividad 1833 1 - 0
Andrew Shattock 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1474 = (5494 + 400 * (2 - 1)) / 4)

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